is a role playing game
campaign setting originally authored in the 1970s
by Dave Arneson
, the co-creator of the Dungeons & Dragons
game. Blackmoor is the longest continuously played fantasy role playing campaign in existence.
The original Blackmoor was published by Tactical Studies Rules (TSR) in 1975 in booklet form. Zeitgeist Games, where Arneson works, is producing an updated d20 system version of Blackmoor to be published by Goodman Games.